Convergence cabinet and energy storage system

Abstract

The embodiment of the utility model discloses a confluence cabinet and an energy storage system, the confluence cabinet comprises a cabinet body and a cabinet door, the cabinet body is provided with a first isolation chamber and a second isolation chamber, the cabinet door is rotatably connected with the cabinet body and is configured to seal the first isolation chamber and the second isolation chamber, and the first isolation chamber and the second isolation chamber are arranged along a preset first direction. The first isolation chamber is internally provided with a first power distribution module, the second isolation chamber is internally provided with an uninterruptible power supply, the uninterruptible power supply is close to the bottom of the cabinet body, and the uninterruptible power supply is configured as a standby power supply of the battery management system, so that the standby power supply can be provided for the battery management system, and meanwhile, the uninterruptible power supply is arranged at the lower part of the confluence cabinet; the problem that the maintainability is poor due to the fact that the uninterruptible power supply is arranged at the top of the confluence cabinet is solved, maintenance of the uninterruptible power supply is facilitated, meanwhile, the problem that the energy storage cabinet breaks down due to liquid leakage of the uninterruptible power supply can be avoided, and the reliability and safety of the energy storage system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a busbar cabinet and an energy storage system. BACKGROUND

[0002] The battery prefabricated cabin type battery energy storage system is usually equipped with a battery management system, which can monitor the voltage, temperature of each cluster, each module and each battery cell in the cabin, as well as the data such as battery cluster voltage and current in real time, and can control the cabin circuit breaker or switch to be opened for failure. The battery prefabricated cabin type battery energy storage system not only improves the safety of the system, but also enhances the operation efficiency and stability. Among them, the battery cabin in the battery prefabricated cabin is usually divided into a battery cabin, an electrical cabin and a liquid cooling cabin.

[0003] In the related art, the battery cabin occupies a large space in the battery prefabricated cabin, which causes the space of the electrical cabin to be compressed, resulting in the problem that the busbar cabinet of the electrical cabin cannot be arranged with an uninterruptible power supply (UPS), or after arranging the uninterruptible power supply, the uninterruptible power supply cannot be effectively maintained, thereby making the reliability and safety of the battery prefabricated cabin type battery energy storage system poor. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the present application provides a busbar cabinet and an energy storage system, aiming to solve the technical problem of poor reliability and safety of the energy storage system in the prior art.

[0005] To solve the above problems, in a first aspect, the present application provides a busbar cabinet, comprising:

[0006] a cabinet body provided with a first isolation chamber and a second isolation chamber;

[0007] a cabinet door rotationally connected with the cabinet body and configured to close the first isolation chamber and the second isolation chamber;

[0008] wherein the first isolation chamber and the second isolation chamber are arranged along a preset first direction, the first isolation chamber is provided with a first power distribution module, the second isolation chamber is provided with an uninterruptible power supply, the uninterruptible power supply is close to the bottom of the cabinet body, and the uninterruptible power supply is configured as a backup power supply of a battery management system.

[0009] Further, in the busbar cabinet, the first isolation chamber is further provided with a master control module of the battery management system.

[0010] Further, in the busbar cabinet, the cabinet body is further provided with a third isolation chamber, the third isolation chamber is arranged along a preset second direction with the first isolation chamber, and the third isolation chamber is provided with a second power distribution module.

[0011] Further, in the busbar cabinet, the second power distribution module is a direct current power distribution module.

[0012] Further, in the busbar cabinet, the second power distribution module comprises at least one of a main circuit breaker, a protection switch.

[0013] Further, in the busbar cabinet, the cabinet door comprises a first cabinet door and a second cabinet door.

[0014] The first cabinet door and the second cabinet door are both rotatably connected to the cabinet body, the first cabinet door is configured to close the third isolation chamber, and the second cabinet door is configured to close the first isolation chamber and the second isolation chamber.

[0015] Further, in the busbar cabinet, the display module of the battery management system is arranged on the first cabinet door and is close to the main control module of the battery management system; or / and,

[0016] At least one of the operation module and the state module of the battery management system is arranged on the second cabinet door.

[0017] Further, in the busbar cabinet, the first power distribution module is an alternating current power distribution module.

[0018] Further, in the busbar cabinet, the first power distribution module comprises at least one of a line switch, a mutual inductor, a direct current switch and a time delay switch.

[0019] Further, in the busbar cabinet, at least one of a socket and a terminal block is further arranged in the first isolation chamber; or / and,

[0020] The cabinet body is provided with a mounting member on a side away from the first isolation chamber and the second isolation chamber.

[0021] In a second aspect, the application further provides an energy storage system comprising the busbar cabinet of the first aspect.

[0022] The application provides a bus cabinet, which comprises a cabinet body and a cabinet door, the cabinet body is provided with a first isolation chamber and a second isolation chamber, the cabinet door is rotationally connected with the cabinet body and is configured to close the first isolation chamber and the second isolation chamber, the first isolation chamber and the second isolation chamber are arranged along a preset first direction, the first isolation chamber is provided with a first power distribution module, and the second isolation chamber is provided with an uninterruptible power supply, the uninterruptible power supply is close to the bottom of the cabinet body, and the uninterruptible power supply is configured as a backup power supply of a battery management system, so that the backup power supply of the battery management system can be provided, the uninterruptible power supply is arranged at the lower part of the bus cabinet, the problem of poor maintainability caused by arranging the uninterruptible power supply at the top of the bus cabinet is solved, the maintenance of the uninterruptible power supply is facilitated, the problem of malfunction of the energy storage cabinet caused by liquid leakage of the uninterruptible power supply can be avoided, and the reliability and safety of the energy storage system are improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The first structural diagram of the bus cabinet provided by the embodiment of the application is shown in the figure.

[0025] Figure 2 The second structural diagram of the bus cabinet provided by the embodiment of the application is shown in the figure.

[0026] Figure 3 The third structural diagram of the bus cabinet provided by the embodiment of the application is shown in the figure.

[0027] Figure 4 The fourth structural diagram of the bus cabinet provided by the embodiment of the application is shown in the figure.

[0028] Figure 5 The fifth structural diagram of the bus cabinet provided by the embodiment of the application is shown in the figure.

[0029] Figure 6 The sixth structural diagram of the bus cabinet provided by the embodiment of the application is shown in the figure.

[0030] Figure 7 The front view of the cabinet door provided by the embodiment of the application is shown in the figure.

[0031] Figure 8 The front view of the cabinet body provided by the embodiment of the application is shown in the figure.

[0032] Wherein, 10 is the cabinet body, 101 is the first isolation chamber, 102 is the second isolation chamber, 103 is the third isolation chamber, 201 is the first cabinet door, 202 is the second cabinet door, 301 is the molded case circuit breaker, 302 is the current transformer, 303 is the miniature circuit breaker, 304 is the AC surge protector, 401 is the uninterruptible power supply, 402 is the backup battery, 501 is the isolating switch, 502 is the intermediate relay, 503 is the main circuit fuse, 504 is the surge protector backup fuse, 505 is the DC surge protector, 601 is the socket, 602 is the terminal block, 603 is the electric meter, 604 is the wiring slot, 605 is the display screen, 701 is the main control module. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0035] It should also be understood that the terms used in the present application specification are only for the purpose of describing particular embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, unless otherwise clearly indicated by the context, the singular forms "a", "an" and "the" are intended to include the plural forms as well.

[0036] It should be further understood that the term "and / or" used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0037] In addition, in the present application, unless otherwise explicitly provided or limited in the embodiments, the terms "mounting", "connecting", "connecting" and "fixing" and the like appearing in the embodiments should be understood broadly, for example, the connection can be fixed connection, or detachable connection, or integral, which can be understood as mechanical connection, electrical connection, etc. of course, it can also be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements, or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific implementation situation.

[0038] As mentioned in the background art, the technical problem of poor reliability and safety of the energy storage system, to solve this technical problem, the present application provides a busbar cabinet and an energy storage system.

[0039] Please refer to Figures 1 to 6 The present application provides a busbar cabinet, which comprises:

[0040] The cabinet body 10 is provided with a first isolation chamber 101 and a second isolation chamber 102;

[0041] The cabinet door is rotatably connected with the cabinet body 10 and is configured to close the first isolation chamber 101 and the second isolation chamber 102;

[0042] Wherein, the first isolation chamber 101 and the second isolation chamber 102 are arranged along a preset first direction, the first isolation chamber 101 is provided with a first power distribution module, the second isolation chamber 102 is provided with an uninterruptible power supply 401, the uninterruptible power supply 401 is close to the bottom of the cabinet body 10, and the uninterruptible power supply 401 is configured as a backup power supply of the battery management system.

[0043] In the present embodiment, the first direction can be the vertical direction of the busbar cabinet after installation, that is, the first isolation chamber 101 and the second isolation chamber 102 can be arranged from top to bottom, so that the second isolation chamber 102 is located at the lower part of the busbar cabinet, and the uninterruptible power supply 401 can be arranged in the second isolation chamber 102, so that the storage battery of the uninterruptible power supply 401 can be arranged in the second isolation chamber 102, which not only realizes the provision of backup power supply for the battery management system, but also solves the problem of poor maintainability caused by arranging the uninterruptible power supply 401 on the top of the busbar cabinet, facilitates the maintenance of the uninterruptible power supply 401, and also avoids the problem of failure of the energy storage cabinet due to leakage of the uninterruptible power supply 401, improves the reliability and safety of the energy storage system.

[0044] Meanwhile, the first isolated chamber 101 can be provided with a first power distribution module, which can distribute external power for use by the battery management system. The battery management system (BMS) mainly includes functions such as monitoring battery status, controlling charging process, distributing power, and protecting battery. The battery management system is composed of a master control module 701 and a slave control module, wherein the master control module 701 is responsible for functions such as total voltage and total current collection, internal and external communication, fault recording and decision making; the slave control module is usually responsible for functions such as single cell voltage collection, temperature collection and balancing.

[0045] The busbar cabinet provided by the application not only has efficient power distribution and management functions, but also improves the reliability and safety of the battery management system through modular design, and is suitable for various occasions requiring high-reliability power management and monitoring.

[0046] The busbar cabinet provided by the application includes a cabinet body 10 and a cabinet door, the cabinet body 10 is provided with a first isolated chamber 101 and a second isolated chamber 102, the cabinet door is rotationally connected with the cabinet body 10 and is configured to close the first isolated chamber 101 and the second isolated chamber 102, the first isolated chamber 101 and the second isolated chamber 102 are arranged along a preset first direction, the first isolated chamber 101 is provided with a first power distribution module, and the second isolated chamber 102 is provided with an uninterruptible power supply 401, the uninterruptible power supply 401 is close to the bottom of the cabinet body 10, and the uninterruptible power supply 401 is configured as a backup power supply of the battery management system, thereby achieving that the backup power supply can be provided for the battery management system, the uninterruptible power supply 401 is arranged at the lower part of the busbar cabinet, the problem of poor maintainability caused by arranging the uninterruptible power supply 401 at the top of the busbar cabinet is solved, the maintenance of the uninterruptible power supply 401 is facilitated, meanwhile, the problem of malfunction of the energy storage cabinet due to liquid leakage of the uninterruptible power supply 401 can be avoided, and the reliability and safety of the energy storage system are improved.

[0047] In some embodiments, as shown in Figure 4 The first isolated chamber 101 is further provided with a master control module 701 of the battery management system.

[0048] Specifically, the master control module 701 of the battery management system can also be directly arranged in the first isolated chamber 101, so that the busbar cabinet not only has efficient power distribution and management functions, but also improves the reliability and safety of the battery management system through modular design, and is suitable for various occasions requiring high-reliability power management and monitoring.

[0049] In some embodiments, the first power distribution module is an alternating current power distribution module.

[0050] In the embodiment, the first power distribution module can distribute the external alternating power supply to the battery management system to provide auxiliary power supply for the battery management system, thereby achieving effective distribution and management of the power supply and ensuring stable operation and high efficiency of the battery management system.

[0051] It should be noted that the first power distribution module can also be a direct current power distribution module, which can also be used to distribute power supply to the battery management system to provide auxiliary power supply for the battery management system.

[0052] In addition, the first power distribution module can also simultaneously include an alternating current power distribution module and a direct current power distribution module, and the alternating current power distribution module and the direct current power distribution module can be installed in isolation in the main control box, thereby achieving alternating current and direct current isolation and improving the safety of the battery management system.

[0053] In some embodiments, as shown in Figures 1 to 6 The cabinet 10 further comprises a third isolation chamber 103 arranged along a preset second direction with the first isolation chamber 101, and a second power distribution module is arranged in the third isolation chamber 103.

[0054] Specifically, the second direction can be the left-right direction or the front-rear direction of the busbar cabinet after installation, that is, after the first isolation chamber 101 and the second isolation chamber 102 are arranged in the up-down direction, the first isolation chamber 101 and the second isolation chamber 102 can be arranged in the front-rear direction or the left-right direction with the third isolation chamber 103.

[0055] In the embodiment, the second power distribution module can also be an alternating current power distribution module or a direct current power distribution module. Preferably, the second power distribution module can be a direct current power distribution module, and the first power distribution module can be an alternating current power distribution module. When the first power distribution module is an alternating current power distribution module and the second power distribution module is a direct current power distribution module, the first power distribution module can be used to electrically connect the external power supply, and the second power distribution module can be used to electrically connect the battery cluster or the battery pack, that is, the first power distribution module and the second power distribution module are located at two ends of the busbar cabinet.

[0056] In some embodiments, the second power distribution module comprises at least one of a main circuit switch and a protection switch.

[0057] In the embodiment, the second power distribution module can be a direct current power distribution module, and the direct current power distribution module comprises a main circuit switch and a protection switch, both of which are arranged in the third isolation chamber 103. Specifically, as shown in Figure 8 The main circuit switch can be a disconnecting switch 501, and the protection switch can be a main circuit fuse 503, a surge protector standby fuse 504, and a direct current surge protector 505.

[0058] Among them, the isolating switch 501, also known as the "knife switch", is a switching device used to isolate circuits in electrical systems. Its main function is to physically disconnect the circuit to ensure that the circuit is completely de-energized during maintenance and repair to prevent electric shock or other hazards. The isolating switch 501 has no arc extinguishing capability and can only open and close the circuit when there is no load current; the main circuit fuse 503 is an electrical component used to protect the high-capacity main feeder or main circuit in the distribution system. Its main function is to melt the fuse through the heat generated by itself to cut off the circuit when a short circuit or severe overcurrent occurs in the circuit, thereby preventing the accident from expanding and protecting the safety of the equipment; the surge protector backup fuse 504 can be used as a backup protection device for the surge protector, but its use needs to consider the compatibility with the surge protector, the type and breaking capacity of the fuse, and whether it complies with relevant standards and specifications; the DC surge protector 505 (DC Surge Protection A SPD is a device used to protect electrical equipment from transient overvoltage and lightning strikes. Its main function is to limit the transient overvoltage that penetrates into power lines or signal transmission lines to a voltage range that the equipment or system can withstand, or to discharge strong lightning current into the ground, thereby protecting the protected equipment or system from damage.

[0059] In some embodiments, as Figure 1 、 Figure 2 and Figure 3 As shown, the cabinet door includes a first cabinet door 201 and a second cabinet door 202; wherein, the first cabinet door 201 and the second cabinet door 202 are both rotatably connected to the cabinet body 10, the first cabinet door 201 is configured to close the third isolation chamber 103, and the second cabinet door 202 is configured to close the first isolation chamber 101 and the second isolation chamber 102.

[0060] In this embodiment, the first cabinet door 201 and the second cabinet door 202 are double-doors. The first cabinet door 201 can be used to close the third isolation chamber 103, that is, to close the DC distribution module in the third isolation chamber 103. The second cabinet door 202 can be used to close the first isolation chamber 101 and the second isolation chamber 102, that is, to close the AC distribution module in the first isolation chamber 101 and the UPS power supply in the second isolation chamber 102.

[0061] In some embodiments, as Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the display module of the battery management system is arranged on the first cabinet door 201 and is close to the main control module 701 of the battery management system. At least one of the operation module and the status module of the battery management system is arranged on the second cabinet door 202.

[0062] In the embodiment, the display module of the battery management system can be arranged on the outer surface of the first cabinet door 201 and penetrate the first cabinet door 201, and the operation module and the state module of the battery management system are arranged on the outer surface of the second cabinet door 202 and penetrate the second cabinet door 202.

[0063] Specifically, as shown in Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , the display module can be a display screen 605, the display screen 605 can be a display control screen of the battery management system, the operation module can be an emergency stop button and a switching button respectively, the state module can be an indicator light, and the electric meter 603 can also be arranged on the second cabinet door 202. Among them, the display control screen of the battery management system monitors and displays the state information of the battery in real time, has a user-friendly interactive interface and multiple protection functions, and ensures the safety and efficient management of the battery; the emergency stop button is a device for quickly stopping the battery management system in an emergency, the switching button is used to control the opening and closing of the circuit in the battery management system, and is widely used in various high-voltage and low-voltage circuit breakers. The main function of the switching button is to realize the closing (closing) and opening (opening) of the circuit breaker by manual or electric method; the indicator light can display whether the battery management system is running and whether the running is normal.

[0064] In some embodiments, the first power distribution module includes at least one of an incoming line switch, a mutual inductor, a direct current switch, and a time delay switch.

[0065] In the embodiment, the incoming line switch can be an alternating current incoming line circuit breaker, the mutual inductor can be a current transformer 302, the direct current switch can be a loop switch, and the time delay switch can be used to delay the on-off of the battery management system. Specifically, as shown in Figure 4 、 Figure 5 、 Figure 6 and Figure 8 , the incoming line switch can be a molded case circuit breaker 301, the direct current switch can be a miniature circuit breaker 303, and the time delay switch can be an intermediate relay 502. At the same time, an alternating current surge protector 304 can also be arranged in the first isolation chamber 101.

[0066] In some embodiments, as shown in Figure 6 and Figure 8 , the first isolation chamber 101 is also provided with at least one of a socket 601 and a terminal strip 602. Specifically, the socket 601 can be a debugging socket 601, and the terminal strip 602 can be used to connect various components in the first isolation chamber 101. At the same time, a wiring slot 604 is also arranged in the first isolation chamber 101.

[0067] In some embodiments, the cabinet body 10 is provided with a mounting member away from the first isolation chamber 101 and the second isolation chamber 102.

[0068] In the embodiment, the mounting member includes a bearing part and a mounting part, the bearing part is provided with a first through hole, the mounting part is provided with a second through hole, the bearing part can be fixed to the main control box by screwing through the first through hole after the bearing part is behind the main control box, and the mounting part can be fixed to the energy storage cabinet by screwing through the second through hole after the mounting part is in contact with the energy storage cabinet.

[0069] In addition, the cabinet 10 can be provided with a plurality of heat dissipation holes on the left and right sides to facilitate heat dissipation of components in the main control box. The bottom of the cabinet 10 is provided with a cable hole, and the battery, the fire control system, the temperature control system, the lighting system and the external energy storage converter can be introduced from the cable hole.

[0070] In some embodiments, the application also provides an energy storage system including the busbar cabinet mentioned in the above embodiments. Specifically, the energy storage system can be a battery prefabricated cabin type battery energy storage system, which can effectively guarantee the safe and efficient operation of the energy storage project and provide important support for the wide application of renewable energy.

[0071] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A combiner cabinet, characterized in that: include: The cabinet is provided with a first isolation chamber and a second isolation chamber; a cabinet door, rotatably connected to the cabinet body and configured to close the first isolation chamber and the second isolation chamber; The first isolation chamber and the second isolation chamber are arranged along a preset first direction, a first power distribution module is provided in the first isolation chamber, and an uninterruptible power supply is provided in the second isolation chamber. The uninterruptible power supply is close to the bottom of the cabinet and is configured as a backup power supply for the battery management system.

2. The combiner cabinet according to claim 1, characterized in that: The main control module of the battery management system is also provided in the first isolation chamber.

3. The combiner cabinet according to claim 1, characterized in that: The cabinet is further provided with a third isolation chamber, which is arranged along a preset second direction with the first isolation chamber, and a second power distribution module is provided in the third isolation chamber.

4. The combiner cabinet according to claim 3, characterized in that: The second power distribution module is a DC power distribution module.

5. The combiner cabinet according to claim 3, characterized in that: The second power distribution module includes at least one of a main circuit switch and a protection switch.

6. The combiner cabinet according to claim 3, characterized in that: The cabinet doors include a first cabinet door and a second cabinet door; The first cabinet door and the second cabinet door are both rotatably connected to the cabinet body, the first cabinet door is configured to close the third isolation chamber, and the second cabinet door is configured to close the first isolation chamber and the second isolation chamber.

7. The combiner cabinet according to claim 6, characterized in that: The display module of the battery management system is arranged on the first cabinet door and is close to the main control module of the battery management system; or / and, At least one of the operation module and the status module of the battery management system is arranged on the second cabinet door.

8. The combiner cabinet according to any one of claims 1 to 7, characterized in that: The first power distribution module is an AC power distribution module.

9. The combiner cabinet according to claim 8, characterized in that: The first power distribution module includes at least one of an incoming line switch, a transformer, a DC switch, and a time-delay switch.

10. The combiner cabinet according to any one of claims 1 to 7, characterized in that: The first isolation chamber is further provided with at least one of a socket and a terminal block; or / and, A mounting member is provided on a side of the cabinet away from the first isolation chamber and the second isolation chamber.

11. An energy storage system, characterized in that: The utility model comprises the combiner cabinet according to any one of claims 1 to 10.

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